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Finding the Fourth Proportional to 279,392.49, 385,563.24 and 152,067.78

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Solution

The fourth proportional to 279,392.49, 385,563.24 and 152,067.78 is: 209,854.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,392.49 : 385,563.24 = 152,067.78 : x
  2. Step 2: Convert to fraction form
    279,392.49/385,563.24 = 152,067.78/x
  3. Step 3: Cross multiply
    279,392.49x = 385,563.24 × 152,067.78
  4. Step 4: Simplify right side
    279,392.49x = 58,631,745,956.41
  5. Step 5: Solve for x
    x = 58,631,745,956.41/279,392.49
  6. Step 6: Final answer
    x = 209,854.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.